Terminal for pneumatic carriers.



No. 682,374. Patented Sept. I0, I90I. A. WOLTMAN.

TERMINAL FDR PNEUMATIC CARRIE RS.

(Appliclition filed Feb. 1141901.)

(l lo Model.)

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, ing upward in the plane 2 2 of Fig. 1.

, respectively, -and provided with a chamber UNITED STATES FATENTOFFICE.

AUGUST WOLTMAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL PNEUMATICSERVICE COMPANY, OF SAME PLACE.

TERMINAL FOR PNEUMATIC CARRIERS.

SPECIFICATION forming part of Letters Patent No. 682,374, datedSeptember 10, 1901. Application filed February 11, 1901. Serial No.46,782. (No model.)

To all whom itmcty concern:

Be it known that 1, AUGUST WOLTMAN, a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Terminalsfor Pneumatic Carriers, of which the following is a specification.

My invention relates to certain improvements in terminals for pneumaticcarriers, the purpose of said improvements being to so form, arrange,and combine the parts as to bring them into neat and compact shape andinto such relation to each other as to make the manipulation of theterminal easy and convenient.

To such end the invention consists in cer- 'tain novel characteristicspertaining to the form, arrangement, and combination of the diiferentportions of the device, which will be fully described and pointed outbelow.

The preferred construction of the terminal is illustrated in thedrawings, wherein Figure 1 is a median section flatwise of the terminal.Fig. 2 is a horizontal section look- Fig. 3 is a vertical section in theplane 3 3 of the same figure; and Fig. 4 is a section similar to Fig. 3,illustrating a possible modification in sectional form of that portionof the device.

In Fig. 1, A represents what I will term the discharge-tube, because itis the one through which the carrier reaches the terminal, and Brepresents what I shall call the receiving and return tube, because itreceives and returns the carrier, as well as the current of air by whichthe carrier is propelled. The arrows in the drawings indicate thedirection taken by the current of air, and the current may be maintainedby any suitable means, the one to which the preferred form here referredto is adapted being some sort of suction device to which the tube B or abranch thereof leads.

The terminal proper, G, is a chambered tubular extension preferably madein two parts, divided in the plane of the section here shown, andprovided with a base at c, perforated at c c to admit the discharge andreturn tubes,

0 into which the tube B opens, but which is separated from the open endof the tube A by an inner wall or partition 0 a circular downwardextension 0 of which fits closely over the upper end of said tube A.Directly over the end of the tube B the base is provided with an opening0, closed bya suitable valve D, which is opened to receive the carrierwhen the latter is to be inserted into the return-tube. The terminalextends above the base in the form of a tubular curved portion 0containing an approximately circular discharge-passage c and a paralleland preferably partially-surrounding return-passage 0 opening at c" intothe discharge-passage near the end thereof and at c into the chamber 0of the base. The end of the discharge-passage is closed byan ordinaryoutwardly-opening discharge-valve E. The arrangement of thereturn-passage 0 parallel with and alongside of the discharge-passage cobviates the necessity for any cross connection between the end of thedischarge-passage and the return-tube, and by causing the saidreturnpassage to partially surround the dischargepassage it is given thenecessary cross-sectional area without any undue radial extension of thesides of the curved portion of the terminal. The compactness andneatness of the terminal will readily appear from the drawings, as willalso the fact that the arrangement there shown afiords the mostconvenient manipulation of the receiving or return valve D, accessthereto, being rendered possible upon all sides except that occupied bythe discharge-passage of the terminal.

I recognize the possibility of more or less variation in form andconstruction, and for that reason do not limit myself to the specificdetails here shown.

I claim as new and desire to secure by Letters Patent- 1. In a pneumaticcarrier terminal, the combination with a chamberedbase adapted forattachment to the discharge and return tubes, of a receiving-valveopposite the end of the return-tube, a curved extension of said basecontaining a circular discharge-passage, and a contiguous parallelreturn-passage opening into the discharge-passage near the end thereof,and into the chambered base,

and a discharge-valve adapted to close the end of saiddischarge-passage; substantially as described.

2. Inaterminal for pneumatic carriers, the combination with a hollowbase provided with openings to receive the discharge and return tubes,of a curved extension provided with a partition, on one side of which isa circular discharge-passage having a circular opening in the base toreceive the discharge-tube and on the other side of which is a paralleland partiallysurrounding return-passage opening into the interior of thebase and at its opposite end into the end of the discharge-passage, anda discharge-valve closing the end of said discharge-passage;substantially as described.

In witness whereof I have hereunto set my hand, at Chicago, in thecounty of Cook and State of Illinois, this 23d day of January, A. D.1901.

AUGUST WOLTMAN.

Witnesses:

CHAS. O. SHERVEY, S. BLIss.

